Its that simple (in progres)

Enis Ulucay, formerly known as Graf Olaf and now peforming as Hasle Rüegsau, was born in the Swiss-Italian Alps and raised in Zurich, Switzerland. He discovered his passion for electronic music in 1996 at the young age of 15. In the golden era of 90s trance, he attended his first rave - and the moment he saw a DJ spinning records, he knew music would always be a part of his life.
That same year, he bought his first mixer and began experimenting with electronic sounds. With limited resources and no turntables yet, he practiced mixing using a Discman and a home stereo system. Syncing tracks proved to be a challenge—until he found two compilation CDs by Swiss legend DJ Energy with identical BPMs. These became his core set for months. In 1998, he finally acquired his first pair of Technics turntables and fell in love with vinyl. Embracing the evolving nature of electronic music, the “Graf” explored genres from Progressive House to Minimal and Tech House, always keeping an open mind and a deep curiosity for new sounds.
His style is characterized by funky grooves, rolling beats, deep basslines, colorful melodies, and hypnotic harmonies. Drawing from his multicultural roots, his sets often incorporate oriental and Latin rhythms, all tied together with elements of funk and jazz. The result: a signature sound that creates a compelling underground atmosphere.
Over the years, Graf Olaf has become a regular name at some of Zurich’s finest underground clubs. With nearly two decades of DJ experience, he knows exactly how to ignite a dancefloor and keep the energy flowing. In recent years, he began producing his own tracks and has released music on a Swiss label, with more releases in the pipeline.
In addition to his work as a DJ, Enis holds a state-recognized degree in audio engineering from the Technische Berufsschule Zürich. Since 2017, he has applied his expertise in professional live sound and event production across various musical and cultural contexts along with the most famous international performers. 
Internationally, he has played in Berlin, Bangkok, and Koh Phangan, Thailand - where he is a recurring act during the winter season on the island’s vibrant underground scene. 2017 marked another milestone: he founded his own imprint Ensemble Music: (ensemble-music)
After 20 years behind the decks, he pursued formal studies in audio engineering, leading to a creative break between 2019 and 2022. This pause allowed him to recharge and rediscover his artistic identity. His comeback began in 2022with a performance on one of the Love Mobiles at the world-renowned techno parade Street Parade in Zurich. Now, in 2025, he continues this momentum with the launch of his new party label "Limmat Legens" created  together with friends to celebrate a shared passion for electronic music. The first event was held at Club Bellevue in Zurich. His performances remain as infectious as ever—if you’ve seen him live, you know: standing still is not an option. His joyful presence behind the decks is mirrored on the dancefloor, where crowds feed off his vibrant energy.